Exercise Science practice questions

Question: Because skeletal muscle contractions demand large quantities of ATP, skeletal muscles have

Answer Choices:
A. abundant mitochondria and a poor blood supply.
B. many mitochondria and a rich blood supply.
C. adipose tissue between fibers to supply nutrients for ATP production.
D. a rich blood supply and few mitochondria.
E. a rich nerve supply.

Answer: B. many mitochondria and a rich blood supply.

Question: Which of the following is not a function of smooth muscle tissue?

Answer Choices:
A. elevating hairs on the arm
B. moving food materials along the digestive tract
C. forcing blood from the heart into the major arteries
D. altering the diameter of the respiratory passageways
E. forcing urine out of the urinary tract

Answer: A. elevating hairs on the arm

Question: During intense exercise, the amount of oxygen available for aerobic respiration is:

Answer Choices:
A. Limited
B. Not in short supply
C. Provided by the mitochondria
D. All provided by the circulatory system
E. Unlimited

Answer: A. Limited

Question: Put the following structures in order from superficial to deep:

muscle fiber

perimysium

myofibril

fascicle

endomysium

epimysium

Answer Choices:
A. 1, 3, 5, 6, 4, 2
B. 6, 2, 5, 4, 1, 3
C. 1, 5, 4, 3, 2, 6
D. 2, 3, 1, 4, 6, 5
E. 6, 2, 4, 5, 1, 3

Answer: E. 6, 2, 4, 5, 1, 3

Question: The following is a list of the events that occur during a muscle contraction.

Answer Choices:
A. 1, 3, 5, 4, 6, 2
B. 3, 5, 1, 2, 4, 6
C. 1, 4, 6, 2, 3, 5
D. 3, 5, 1, 4, 6, 2
E. 5, 1, 4, 6, 2, 3

Answer: D. 3, 5, 1, 4, 6, 2

Question: After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This results in a condition known as

Answer Choices:
A. depolarization.
B. oxygen debt.
C. tetany.
D. treppe.
E. rigor mortis.

Answer: E. rigor mortis

Question: The muscle tissue that shows no striations is _____ muscle.

Answer Choices:
A. multinucleated
B. cardiac
C. voluntary
D. skeletal
E. smooth

Answer: E. smooth

Question: Which of the following is a recognized function of skeletal muscle?

Answer Choices:
A. maintain posture
B. produce movement
C. guard body entrances and exits
D. maintain body temperature
E. All of the answers are correct.

Answer: E. All of the answers are correct.

Question: Which of these would lead to increased oxygen consumption?

Answer Choices:
A. increased heat production
B. increased muscle activity
C. increased aerobic respiration by muscle cells
D. increased conversion of lactic acid to glucose
E. All of the answers are correct.

Answer: E. All of the answers are correct.

Question: A resting muscle generates most of its ATP by

Answer Choices:
A. glycogenolysis.
B. aerobic metabolism of fatty acids.
C. hydrolysis of creatine phosphate.
D. anaerobic respiration.
E. the tricarboxylic acid cycle.

Answer: B. aerobic metabolism of fatty acids.

Question: A threshold stimulus is the

Answer Choices:
A. depolarization necessary to cause an action potential.
B. hyperpolarization of an axon.
C. peak of an action potential.
D. electrical current that crosses the synaptic cleft.
E. resting potential.

Answer: A. depolarization necessary to cause an action potential.

Question: During activities requiring aerobic endurance:

Answer Choices:
A. oxygen is not required.
B. glycogen and glycolysis are the primary sources of reserve energy.
C. oxygen debts are common.
D. most of the muscle’s energy is produced in mitochondria.
E. fatigue occurs in a few minutes.

Answer: D. most of the muscle’s energy is produced in mitochondria.

Question: Which of the following is a function of Heart Muscle?

Answer Choices:
A. Pump Blood
B. Move Bones
C. Open Sphincters
D. Erect hair
E. Move materials in Digestive tract

Answer: A. Pump Blood

Question: During anaerobic glycolysis:

Answer Choices:
A. carbohydrate is metabolized.
B. pyruvic acid is produced.
C. oxygen is not consumed.
D. ATP is produced.
E. All of the answers are correct.

Answer: E. All of the answers are correct.

Question: Which of the following is a characteristic only of Heart Muscle cells?

Answer Choices:
A. They are striated
B. They are multi-nucleated
C. They have intercalated disks
D. They have spindle shape
E. They are the longest muscle cells

Answer: C. They have intercalated disks